45. A box contains some identical red coloured balls, labelled as A, each weighing 2g. Another box contains identical blue coloured balls, labelled as B, each weighing 5 g. Consider the combinations AB, AB2, A2B and A2B3 and show that law of multiple proportions is applicable.

Combination

Mass of A (g)

Mass of B (g)

AB

2

5

AB2

2

10

A2B

4

5

A2B3

4

15

Mass of B which is combined with fixed mass of A (say 1 g) will be 2.5 g, 5g, 1.25 g and 3.75 g. They are in the ratio 2:4:1:3 which is a simple whole number ratio. Hence, the law of multiple proportions is applicable.